CN111408484A - Horizontal spiral discharge centrifuge - Google Patents
Horizontal spiral discharge centrifuge Download PDFInfo
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- CN111408484A CN111408484A CN201911356306.XA CN201911356306A CN111408484A CN 111408484 A CN111408484 A CN 111408484A CN 201911356306 A CN201911356306 A CN 201911356306A CN 111408484 A CN111408484 A CN 111408484A
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- 239000000463 material Substances 0.000 claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 19
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- 238000009940 knitting Methods 0.000 claims description 21
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 20
- 238000012544 monitoring process Methods 0.000 claims description 15
- 239000003990 capacitor Substances 0.000 claims description 12
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- 238000012423 maintenance Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 3
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
- B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
- B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
- B04B1/2016—Driving control or mechanisms; Arrangement of transmission gearing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B11/00—Feeding, charging, or discharging bowls
- B04B11/06—Arrangement of distributors or collectors in centrifuges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B13/00—Control arrangements specially designed for centrifuges; Programme control of centrifuges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
- B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
- B04B2001/2083—Configuration of liquid outlets
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- Centrifugal Separators (AREA)
Abstract
The invention belongs to the technical field of material centrifugation, and discloses a horizontal spiral discharging centrifuge which is provided with a fixed base, wherein fixed shafts are symmetrically and fixedly arranged at the upper end of the fixed base, rotating devices are arranged on the two fixed shafts, spiral blades are welded outside the rotating devices, a cylindrical shell is sleeved outside the spiral blades, and a solid collecting plate matched with the spiral blades is arranged on the inner wall of the cylindrical shell; the front end of the cylinder shell is fixedly provided with a feeding device through a pipeline, the rear end of the cylinder shell is provided with a material leaking hole, and the discharging end of the material leaking hole is provided with a liquid collecting device; the rotating device is in gear connection with the speed regulating module through a coupler. This horizontal spiral discharge centrifuge rotates centrifugal separation through centrifugal principle inside the device, makes the solid leak to hug closely the drum shell, and liquid flows out through liquid collection device and collects, can continuously separate a large amount of solid-liquid mixture, has improved work efficiency greatly.
Description
Technical Field
The invention belongs to the technical field of material centrifugation, and particularly relates to a horizontal spiral discharging centrifuge.
Background
At present, in the process of rapid development of the coal mining industry, the filtration and separation of solid and liquid are an important process in the industry, and the separation of liquid and solid is performed by a filter press in the past, but the filter press can only perform a small amount of solid-liquid separation in the separation process, and cannot be continuously performed in the separation process, so that the separation efficiency is reduced.
In summary, the problems of the prior art are as follows: the former solid-liquid separation efficiency is not high, and the separation process can not be continuously carried out.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a horizontal spiral discharging centrifuge.
The horizontal spiral discharging centrifuge is provided with a fixed base, fixed shafts are symmetrically and fixedly arranged at the upper end of the fixed base, rotating devices are arranged on the two fixed shafts, spiral fan blades are welded outside the rotating devices, a cylindrical shell is sleeved outside the spiral fan blades, and a solid collecting plate matched with the spiral fan blades is arranged on the inner wall of the cylindrical shell;
the front end of the cylinder shell is fixedly provided with a feeding device through a pipeline, the rear end of the cylinder shell is provided with a material leaking hole, and the discharging end of the material leaking hole is provided with a liquid collecting device; the rotating device is in gear connection with a speed regulating module through a coupler, and a driving end of the speed regulating module is connected with a driving device.
Further, the rotating device establishes a static three-dimensional transient magnetic field mathematical model according to the structure and the main size of the electromagnetic coil;
according to the actual structure and the actual size of the permanent magnet knitting needle, a three-dimensional magnetic field mathematical model of the intrinsic magnetic field after the permanent magnet knitting needle is magnetized is established, and a magnetic field mathematical model of the excitation magnetic field is established;
intrinsic magnetic field B of permanent magnet knitting needleIntrinsic magnetic field＝μ0(H + M), where H and M are the magnetic field strength and magnetization, μ0Is a vacuum magnetic conductivity; for a cylindrical permanent magnetic knitting needle with magnetic conductivity of mu and radius of l, the current at the axis is I, and then:
simultaneously:
for knitting needles of Nd-Fe-B material, the magnetic susceptibility χmIs 1.03;
establishing a field path model, and forming interaction with an excitation magnetic field, wherein B is BExcitation magnetic field+BIntrinsic magnetic inductionThe permanent magnet knitting needles are driven together to knit in three stations; and establishing an actual permanent magnet knitting needle driving power calculation model according to the change of the excitation input current and impedance analysis, and neglecting the magnetic leakage of the coil end part during calculation.
Further, the speed regulation method of the speed regulation module comprises the following steps:
after the speed regulation module is powered on, when the first use of the rotating device or the first use of the rotating device after the interference of a magnetic field is detected, the calibration mode of the speed regulation device is entered
Calibrating a speed regulation module according to user operation, and determining that a driving device is in a constant power state;
the speed regulating module drives the rotating device to enter a constant power state, so that the power of the driving device is constant.
Further, the driving circuit inside the driving device is:
the MOSFET driving module is provided with an IR2101S singlechip, HIN is upper bridge arm control input, L IN is lower bridge arm control input, HO is upper bridge arm driving output, and L O is lower bridge arm driving output;
a VCC pin in the IR2101S singlechip is connected with a +15V power supply module;
an HO pin in the IR2101S singlechip is connected with an MT PU output line, the MT PU output line is connected with a bootstrap capacitor C29, the bootstrap capacitor C29 is connected with a diode D5, the diode D5 is connected with a capacitor C30, and a capacitor C30 is connected with a ground wire;
the NMOS-2 transistor is diode-connected with D17, D18 and D19;
series circuit: the circuit formed by diode-connecting the NMOS-2 transistor and the D13 is connected in series with the circuit formed by diode-connecting the NMOS-2 transistor and the D17.
Further, the optimization method of the driving device comprises the following steps:
firstly, according to a driving device model, carrying out signal acquisition monitoring on a running motor to obtain a signal monitoring parameter of the motor, processing the signal monitoring parameter to obtain a performance tracking parameter of the motor, and compiling a forward electromagnetic calculation program of the motor;
step two, adopting a BP neural network method to perform data fitting modeling on the driving device model;
processing the signal monitoring parameters and the performance tracking parameters based on a fault knowledge base according to preset fault identification rules to obtain fault probabilities of the motor when the motor fails; the fault knowledge base comprises fault association rules and fault maintenance case data; taking the output result of the electromagnetic calculation of the motor as the input data of the driving device model, and combining the two part programs to form a pump-motor integrated model;
and step four, the preset fault identification rule comprises a fault judgment rule and a fault reasoning rule, and the fault judgment rule comprises the step of reversely fitting the signal monitoring parameters and the performance tracking parameters to the water pump test data.
Furthermore, the solid collecting plate is made of a polycarbonate plate, polyethylene, organic glass PMMA or a stainless steel plate, and the auxiliary material is metal plating solution and carbon nano tubes.
Further, the last feed inlet that installs of feed arrangement, the outside spraying of feed inlet has the alloy-layer, feed inlet internally mounted has the spiral feeding pipe.
Further, install on the shaft coupling and fill the nitrogen gas device, fill the upper end of nitrogen gas device and install and fill the nitrogen gas mouth, the lower extreme that fills the nitrogen gas mouth is provided with the tetrafluoro plate, the gland is installed to the lock on the tetrafluoro plate, gland and fill and be provided with O type circle between the nitrogen gas mouth.
Furthermore, the spiral fan blade adopts an electromagnetic shaftless forward centripetal type vortex blade which is connected to the outer wall of the rotating device in a surrounding manner; the continuous strip-shaped shaftless forward centripetal turbine blade has the advantages that the pitch is large and small, the inclination angle of the radius is inclined from 90 degrees to 45 degrees, the radius of the outer edge is unchanged, the thickness edge of the radius is larger than the center, and the bending angle is bent from 90 degrees to 45 degrees towards the center of the boring direction.
The invention has the advantages and positive effects that: this horizontal spiral discharge centrifuge rotates centrifugal separation through centrifugal principle inside the device, makes the solid leak to hug closely the drum shell, and liquid flows out through liquid collection device and collects, can continuously separate a large amount of solid-liquid mixture, has improved work efficiency greatly.
Drawings
Fig. 1 is a schematic structural diagram of a horizontal spiral discharge centrifuge provided by an embodiment of the invention.
Fig. 2 is a schematic structural diagram of a horizontal spiral discharge centrifuge provided by the embodiment of the invention.
Fig. 3 is a schematic diagram of a driving circuit inside the driving apparatus according to the embodiment of the present invention.
In the figure: 1. a fixed base; 2. a feeding device; 3. a fixed shaft; 4. a rotating device; 5. a helical fan blade; 6. a cylindrical housing; 7. a solids collection plate; 8. a material leaking hole; 9. a speed regulation module; 10. a drive device; 11. a liquid collection device.
Detailed Description
In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings.
The structure of the present invention will be described in detail with reference to fig. 1 to 3.
The horizontal spiral discharging centrifuge is provided with a fixed base 1, two fixed shafts 3 are respectively welded on two sides of the upper part of the fixed base 1, a cylinder shell 6 is welded between the two fixed shafts 3, a material leaking hole 8 is formed in the lower portion of the right side of the cylinder shell 6, and a feeding device 2 is welded on the fixed shaft 3 on the left side. A rotating device 4 is arranged between the two fixed shafts 3, and spiral fan blades 5 are welded on the rotating device 4. The other end of the rotating device 4 is installed on an output shaft of the speed regulating module 9 through welding connection. The other end of the speed regulation module 9 is connected with a driving device 10, the rotating device 4 drives the speed regulation module 9 to drive through the driving device 10, and a liquid collection device 11 is welded outside the right fixing shaft 3.
The rotating device establishes a static three-dimensional transient magnetic field mathematical model according to the structure and the main size of the electromagnetic coil;
according to the actual structure and the actual size of the permanent magnet knitting needle, a three-dimensional magnetic field mathematical model of the intrinsic magnetic field after the permanent magnet knitting needle is magnetized is established, and a magnetic field mathematical model of the excitation magnetic field is established;
intrinsic magnetic field B of permanent magnet knitting needleIntrinsic magnetic field＝μ0(H + M), where H and M are the magnetic field strength and magnetization, μ0Is a vacuum magnetic conductivity; for a cylindrical permanent magnetic knitting needle with magnetic conductivity of mu and radius of l, the current at the axis is I, and then:
simultaneously:
for knitting needles of Nd-Fe-B material, the magnetic susceptibility χmIs 1.03;
establishing a field path model, and forming interaction with an excitation magnetic field, wherein B is BExcitation magnetic field+BIntrinsic magnetic inductionThe permanent magnet knitting needles are driven together to knit in three stations; and establishing an actual permanent magnet knitting needle driving power calculation model according to the change of the excitation input current and impedance analysis, and neglecting the magnetic leakage of the coil end part during calculation.
Further, the speed regulation method of the speed regulation module 9 comprises the following steps:
after the speed regulation module 9 is powered on, when the first use of the rotating device or the first use of the rotating device after the interference of a magnetic field is detected, the calibration mode of the speed regulation device is entered
Calibrating the speed regulating module 9 according to the user operation, and determining that the driving device 10 is in a constant power state;
the speed regulating module 9 drives the rotating device to enter a constant power state, so that the power of the driving device 10 is constant.
Further, the driving circuit inside the driving device 10 is:
the MOSFET driving module is provided with an IR2101S singlechip, HIN is upper bridge arm control input, L IN is lower bridge arm control input, HO is upper bridge arm driving output, and L O is lower bridge arm driving output;
a VCC pin in the IR2101S singlechip is connected with a +15V power supply module;
an HO pin in the IR2101S singlechip is connected with an MT PU output line, the MT PU output line is connected with a bootstrap capacitor C29, the bootstrap capacitor C29 is connected with a diode D5, the diode D5 is connected with a capacitor C30, and a capacitor C30 is connected with a ground wire;
the NMOS-2 transistor is diode-connected with D17, D18 and D19;
series circuit: the circuit formed by diode-connecting the NMOS-2 transistor and the D13 is connected in series with the circuit formed by diode-connecting the NMOS-2 transistor and the D17.
Further, the optimization method of the driving device 10 comprises the following steps:
firstly, according to a driving device 10 model, carrying out signal acquisition monitoring on a motor in operation to obtain a signal monitoring parameter of the motor, processing the signal monitoring parameter to obtain a performance tracking parameter of the motor, and compiling a forward electromagnetic calculation program of the motor;
step two, carrying out data fitting modeling on the driving device 10 model by adopting a BP neural network method;
processing the signal monitoring parameters and the performance tracking parameters based on a fault knowledge base according to preset fault identification rules to obtain fault probabilities of the motor when the motor fails; the fault knowledge base comprises fault association rules and fault maintenance case data; taking the output result of the electromagnetic calculation of the motor as the input data of the driving device 10 model, and combining the two part programs to form a machine-pump integrated model;
and step four, the preset fault identification rule comprises a fault judgment rule and a fault reasoning rule, and the fault judgment rule comprises the step of reversely fitting the signal monitoring parameters and the performance tracking parameters to the water pump test data.
Furthermore, the solid collecting plate is made of a polycarbonate plate, polyethylene, organic glass PMMA or a stainless steel plate, and the auxiliary material is metal plating solution and carbon nano tubes.
Further, the last feed inlet that installs of feed arrangement, the outside spraying of feed inlet has the alloy-layer, feed inlet internally mounted has the spiral feeding pipe.
Further, install on the shaft coupling and fill the nitrogen gas device, fill the upper end of nitrogen gas device and install and fill the nitrogen gas mouth, the lower extreme that fills the nitrogen gas mouth is provided with the tetrafluoro plate, the gland is installed to the lock on the tetrafluoro plate, gland and fill and be provided with O type circle between the nitrogen gas mouth.
Furthermore, the spiral fan blade adopts an electromagnetic shaftless forward centripetal type vortex blade which is connected to the outer wall of the rotating device in a surrounding manner; the continuous strip-shaped shaftless forward centripetal turbine blade has the advantages that the pitch is large and small, the inclination angle of the radius is inclined from 90 degrees to 45 degrees, the radius of the outer edge is unchanged, the thickness edge of the radius is larger than the center, and the bending angle is bent from 90 degrees to 45 degrees towards the center of the boring direction.
The solid-liquid mixed material is fed through the feeding device 2, the material enters the cylinder shell 6, the rotating device 4 drives the speed regulating module 9 to rotate at a high speed through the driving device 10, and the rotating device 4 drives the spiral fan blade 5 to rotate. The inner material also rotates along with the rotating device 4, under the centrifugal action, the heavier material is centrifugally separated to the outer ring to be tightly attached to the cylinder shell 6, and is pushed forward by the rotating spiral fan blades 5 until the heavier material leaks from the material leaking hole 8 to the collecting plate 7 to be collected. The lighter liquid forms a liquid ring in the inner layer and is discharged and collected by the liquid collecting device 11.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (9)
1. The horizontal spiral discharging centrifuge is characterized in that the horizontal spiral discharging centrifuge is provided with a fixed base, fixed shafts are symmetrically and fixedly installed at the upper end of the fixed base, rotating devices are installed on the two fixed shafts, spiral blades are welded outside the rotating devices, a cylindrical shell is sleeved outside the spiral blades, and a solid collecting plate matched with the spiral blades is arranged on the inner wall of the cylindrical shell;
the front end of the cylinder shell is fixedly provided with a feeding device through a pipeline, the rear end of the cylinder shell is provided with a material leaking hole, and the discharging end of the material leaking hole is provided with a liquid collecting device; the rotating device is in gear connection with a speed regulating module through a coupler, and a driving end of the speed regulating module is connected with a driving device.
2. The horizontal spiral discharge centrifuge of claim 1, wherein the rotating means creates a static three-dimensional transient magnetic field mathematical model based on the structure and major dimensions of the electromagnetic coil;
according to the actual structure and the actual size of the permanent magnet knitting needle, a three-dimensional magnetic field mathematical model of the intrinsic magnetic field after the permanent magnet knitting needle is magnetized is established, and a magnetic field mathematical model of the excitation magnetic field is established;
intrinsic magnetic field B of permanent magnet knitting needleIntrinsic magnetic field＝μ0(H + M), where H and M are the magnetic field strength and magnetization, μ0Is a vacuum magnetic conductivity; for a cylindrical permanent magnetic knitting needle with magnetic conductivity of mu and radius of l, the current at the axis is I, and then:
simultaneously:
for knitting needles of Nd-Fe-B material, the magnetic susceptibility χmIs 1.03;
establishing a field path model, and forming interaction with an excitation magnetic field, wherein B is BExcitation magnetic field+BIntrinsic magnetic inductionThe permanent magnet knitting needles are driven together to knit in three stations; and establishing an actual permanent magnet knitting needle driving power calculation model according to the change of the excitation input current and impedance analysis, and neglecting the magnetic leakage of the coil end part during calculation.
3. The horizontal spiral discharge centrifuge of claim 1, wherein the speed regulating method of the speed regulating module comprises the following steps:
after the speed regulation module is powered on, when the first use of the rotating device or the first use of the rotating device after the interference of a magnetic field is detected, the calibration mode of the speed regulation device is entered
Calibrating a speed regulation module according to user operation, and determining that a driving device is in a constant power state;
the speed regulating module drives the rotating device to enter a constant power state, so that the power of the driving device is constant.
4. The horizontal spiral discharge centrifuge of claim 1, wherein the drive circuit inside the drive unit is:
the MOSFET driving module is provided with an IR2101S singlechip, HIN is upper bridge arm control input, L IN is lower bridge arm control input, HO is upper bridge arm driving output, and L O is lower bridge arm driving output;
a VCC pin in the IR2101S singlechip is connected with a +15V power supply module;
an HO pin in the IR2101S singlechip is connected with an MT PU output line, the MT PU output line is connected with a bootstrap capacitor C29, the bootstrap capacitor C29 is connected with a diode D5, the diode D5 is connected with a capacitor C30, and a capacitor C30 is connected with a ground wire;
the NMOS-2 transistor is diode-connected with D17, D18 and D19;
series circuit: the circuit formed by diode-connecting the NMOS-2 transistor and the D13 is connected in series with the circuit formed by diode-connecting the NMOS-2 transistor and the D17.
5. The horizontal spiral discharge centrifuge of claim 1, wherein said drive means optimization method comprises the steps of:
firstly, according to a driving device model, carrying out signal acquisition monitoring on a running motor to obtain a signal monitoring parameter of the motor, processing the signal monitoring parameter to obtain a performance tracking parameter of the motor, and compiling a forward electromagnetic calculation program of the motor;
step two, adopting a BP neural network method to perform data fitting modeling on the driving device model;
processing the signal monitoring parameters and the performance tracking parameters based on a fault knowledge base according to preset fault identification rules to obtain fault probabilities of the motor when the motor fails; the fault knowledge base comprises fault association rules and fault maintenance case data; taking the output result of the electromagnetic calculation of the motor as the input data of the driving device model, and combining the two part programs to form a pump-motor integrated model;
and step four, the preset fault identification rule comprises a fault judgment rule and a fault reasoning rule, and the fault judgment rule comprises the step of reversely fitting the signal monitoring parameters and the performance tracking parameters to the water pump test data.
6. The horizontal spiral discharging centrifuge of claim 1, wherein the solid collecting plate is made of polycarbonate plate, polyethylene, organic glass PMMA or stainless steel plate, and the auxiliary material is metal plating solution or carbon nano tube.
7. The horizontal spiral discharging centrifuge as claimed in claim 1, wherein the feeding device is provided with a feeding hole, an alloy layer is coated outside the feeding hole, and a spiral feeding pipe is arranged inside the feeding hole.
8. The horizontal spiral discharging centrifuge as claimed in claim 1, wherein the coupling is provided with a nitrogen charging device, the upper end of the nitrogen charging device is provided with a nitrogen charging port, the lower end of the nitrogen charging port is provided with a tetrafluoro plate, the tetrafluoro plate is buckled with a gland, and an O-shaped ring is arranged between the gland and the nitrogen charging port.
9. The horizontal spiral discharging centrifuge as claimed in claim 1, wherein the spiral fan blade is an electromagnetic shaftless forward type centripetal turbine blade, and the centripetal turbine blade is connected to the outer wall of the rotating device in a surrounding manner; the continuous strip-shaped shaftless forward centripetal turbine blade has the advantages that the pitch is large and small, the inclination angle of the radius is inclined from 90 degrees to 45 degrees, the radius of the outer edge is unchanged, the thickness edge of the radius is larger than the center, and the bending angle is bent from 90 degrees to 45 degrees towards the center of the boring direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911356306.XA CN111408484A (en) | 2019-12-25 | 2019-12-25 | Horizontal spiral discharge centrifuge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911356306.XA CN111408484A (en) | 2019-12-25 | 2019-12-25 | Horizontal spiral discharge centrifuge |
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| CN111408484A true CN111408484A (en) | 2020-07-14 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB775698A (en) * | 1953-11-18 | 1957-05-29 | Galileo Off | Improvements in constant power speed-varying hydraulic apparatus |
| CN2852527Y (en) * | 2005-10-28 | 2006-12-27 | 刘森钢 | Wide band speed-regulating constant power high-speed electric main shaft |
| CN107096648A (en) * | 2017-05-26 | 2017-08-29 | 安徽普源分离机械制造有限公司 | A kind of horizontal spiral automatic discharging sedimentation centrifuge of negative pressure driving charging |
| CN107115976A (en) * | 2017-05-26 | 2017-09-01 | 安徽普源分离机械制造有限公司 | One kind supercharging overflow type horizontal spiral automatic discharging sedimentation centrifuge |
| CN108107360A (en) * | 2017-12-05 | 2018-06-01 | 中国电子产品可靠性与环境试验研究所 | Electrical fault discrimination method and system |
-
2019
- 2019-12-25 CN CN201911356306.XA patent/CN111408484A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB775698A (en) * | 1953-11-18 | 1957-05-29 | Galileo Off | Improvements in constant power speed-varying hydraulic apparatus |
| CN2852527Y (en) * | 2005-10-28 | 2006-12-27 | 刘森钢 | Wide band speed-regulating constant power high-speed electric main shaft |
| CN107096648A (en) * | 2017-05-26 | 2017-08-29 | 安徽普源分离机械制造有限公司 | A kind of horizontal spiral automatic discharging sedimentation centrifuge of negative pressure driving charging |
| CN107115976A (en) * | 2017-05-26 | 2017-09-01 | 安徽普源分离机械制造有限公司 | One kind supercharging overflow type horizontal spiral automatic discharging sedimentation centrifuge |
| CN108107360A (en) * | 2017-12-05 | 2018-06-01 | 中国电子产品可靠性与环境试验研究所 | Electrical fault discrimination method and system |
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